[llvm] [RISCV] Add OR/XOR/SUB to RISCVInstrInfo::isCopyInstrImpl (PR #132002)

[Min-Yih Hsu via llvm-commits]

https://github.com/mshockwave approved this pull request.

LGTM. Since you mentioned rotate with zero offset, have you seen any left/right shiftings with zero offset in SPEC?

https://github.com/llvm/llvm-project/pull/132002